View difference between Paste ID: eCAZ6nz5 and HiewJ4cF

 using System;
 using System.Linq;
 using System.Text;
 using System.Collections.Generic;
 
 namespace CommandInterpreter
 
 {
     class Program
     {
         static void Main(string[] args)
         {
             List<string> seq = Console.ReadLine().Split(" ", StringSplitOptions.RemoveEmptyEntries).ToList();
             while (true)
             {
                 var command = Console.ReadLine();
                 if (command == "end")
                 {
                     break;
                 }
 
                 string[] commands = command.Split();
                 string instruction = commands[0];
                 long start = 0;
                 long count = 0;
                 if (instruction == "reverse" || instruction == "sort")
                 {
                     start = long.Parse(commands[2]);
                     count = long.Parse(commands[4]);
                     if (start < 0 || start + count > seq.Count || count < 0 || start > seq.Count - 1)
                     {
                         Console.WriteLine("Invalid input parameters.");
                     }
                     else
                     {
                         seq = Reverse(seq, start, count, instruction);
                     }
                 }
             }
             Console.WriteLine($"[{String.Join(", ", seq)}]");
         }
 
         private static List<string> Reverse(List<string> seq, long start, long count, string instruction)
         {
             List<string> leftPart = seq.Take((int)start).ToList();
             List<string> rightPart = seq.Skip((int)(start + count)).ToList();
             List<string> toTreat = seq.Skip((int)start).Take((int)count).ToList();
 
             if (instruction == "reverse")
             {
                 toTreat.Reverse();
 
             }
             else if (instruction == "sort")
             {
                 toTreat.Sort();
             }
             List<string> treated = new List<string>();
             treated.AddRange(leftPart);
             treated.AddRange(toTreat);
             treated.AddRange(rightPart);
 
             return treated;
 
         }
     }
 }